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CHEMISTRY AND MATERIAL SCIENCE
Effect of nonstoichiometry and amount of additives on the structure of HAp-TiO$_y$ mixtures produced by high-energy fragmentation
S. V. Rempelab, K. A. Sergeevac, H. Schroettnerd, A. A. Valeevaab a Institute of Solid State Chemistry UB RAS, 91, Pervomaiskaya st., 620990, Ekaterinburg, Russia
b Ural Federal University named after the first President of Russia B. N. Eltsin, 19, Mira st., 620002, Ekaterinburg, Russia
c Far-Eastern Federal University, 8, Sukhanova st., 690090, Vladivostok, Russia
d Institute for Electron Microscopy and Nanoanalysis, Graz University of Technology,
Steyrergasse 17/III, A-8010 Graz, Austria
Abstract:
The nanoparticle sizes in hydroxyapatite (HAp), titanium monoxide (TiO$_y$) and HAp-TiO$_y$ mixtures ($y = 0.92$; $1.23$) have been studied by XRD and HRTEM techniques as a function of milling time. It was established that the high-energy milling does not lead to a considerable decrease in the particle size and to a variation in the HAp crystal lattice parameters, but it promotes $4$-fold reduction of microstrains. It was shown that the dependence of the average size of crystal and structural parameters on the milling time for the HAp-TiO$_y$ mixtures is similar to that of initial HAp. The coherent scattering region of HAp does not depend on stoichiometry and TiO$_y$ content in the mixture andis $\sim15 \pm 5$ nm after milling for $480$ min.
Keywords:
titanium monoxide, hydroxyapatite, milling, mixtures, crystal structure, microstructure, phase composition.
Received: 28.05.2018 Revised: 13.07.2018
Citation:
S. V. Rempel, K. A. Sergeeva, H. Schroettner, A. A. Valeeva, “Effect of nonstoichiometry and amount of additives on the structure of HAp-TiO$_y$ mixtures produced by high-energy fragmentation”, Nanosystems: Physics, Chemistry, Mathematics, 9:4 (2018), 549–557
Linking options:
https://www.mathnet.ru/eng/nano343 https://www.mathnet.ru/eng/nano/v9/i4/p549
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Abstract page: | 76 | Full-text PDF : | 16 |
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